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ISO/AWI 5663

Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with a metal catalyst

General information

Current stage: 20.00 Effective date: 14 mar 2025

Originator: ISO

Owner: ISO/TC 147/SC 2

Type: International Standard

Scope

Specifies a procedure for the determination of trivalent negative nitrogen. Organic nitrogen in the form of azide, azine, azo, hydrazone, nitrite, nitro, nitroso, oxime or semicarbazone is not determined quantitatively. The procedure is applicable to the analysis of raw, potable and waste waters.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 5663:1984

NOW

IN_DEVELOPMENT
ISO/AWI 5663
20.00 New project registered in TC/SC work programme
14 mar 2025